diff --git a/resources/lang/pt_BR/firefly.php b/resources/lang/pt_BR/firefly.php
index f3a86f2b44..cf21294301 100644
--- a/resources/lang/pt_BR/firefly.php
+++ b/resources/lang/pt_BR/firefly.php
@@ -103,6 +103,7 @@ return [
     'all_periods'                                => 'All periods',
     'current_period'                             => 'Current period',
     'show_the_current_period_and_overview'       => 'Show the current period and overview',
+    'pref_languages_locale'                      => 'For a language other than English to work properly, your operating system must be equipped with the correct locale-information. If these are not present, currency data, dates and amounts may be formatted wrong.',
 
     // repeat frequencies:
     'repeat_freq_yearly'                         => 'anual',